diff options
Diffstat (limited to 'tests/ui/issues/issue-28498-must-work-ex2.rs')
-rw-r--r-- | tests/ui/issues/issue-28498-must-work-ex2.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-28498-must-work-ex2.rs b/tests/ui/issues/issue-28498-must-work-ex2.rs new file mode 100644 index 000000000..378d736ee --- /dev/null +++ b/tests/ui/issues/issue-28498-must-work-ex2.rs @@ -0,0 +1,20 @@ +// run-pass +// Example taken from RFC 1238 text + +// https://github.com/rust-lang/rfcs/blob/master/text/1238-nonparametric-dropck.md +// #examples-of-code-that-must-continue-to-work + +use std::cell::Cell; + +struct Concrete<'a>(#[allow(unused_tuple_struct_fields)] u32, Cell<Option<&'a Concrete<'a>>>); + +struct Foo<T> { data: Vec<T> } + +fn main() { + let mut foo = Foo { data: Vec::new() }; + foo.data.push(Concrete(0, Cell::new(None))); + foo.data.push(Concrete(0, Cell::new(None))); + + foo.data[0].1.set(Some(&foo.data[1])); + foo.data[1].1.set(Some(&foo.data[0])); +} |